Answer:
<u>Geocentric Model</u>: - this model is Earth Centered
-Retrograde motion is explained by epicycles
<u>Heliocentric Model</u>: - This model is Sun Centered
-Retrograde motion is explained by the orbital speeds of planets
<u>Both models</u>:- Epicycles and deferents help explain planetary motion
-Planets move in circular orbits and with uniform motion
-The brightness of a planet increases when the planet is closest to Earth
Explanation:
Retrograde motion is an apparent change in the movement of the planet through the sky. Ptolemy's model of the solar systems was geocentric, where the Sun, Moon, planets and start all orbit the Earth in perfectly circular orbits. However this perfectly circular orbits around the Earth did not explain the occasional retrograde motion of the planets. In the Copernicus' heliocentric model, retrograde motion of planets is naturally explained. The explanation for retrograde motion in a heliocentric model is that retrograde occurs roughly when a faster moving planet catches up to and passes a slower moving planet.
Answer:
The volume of the given pyramid is 340.8 cubic feet.
Explanation:
The volume of an object is a consideration of the dimensions of the object with respect to 3 dimensions.
volume of a pyramid = 
x base area x height
But,
base area = length x width
= 12 x 12
= 144 square feet
So that,
volume of the pyramid = x 144 x 7.1
= x 1022.4
= 340.8
The volume of the given pyramid is 340.8 cubic feet.
It might be let me think a square root is right
<span>The steppes of southern Russia, the African veldt and the pampas of Argentina are good examples of grassland biomes.</span>
Answer:
The only factor that distinguishes different cylindrical map projections from one another is the scale used when spacing the parallel lines on the map. The downsides of cylindrical map projections are that they are severely distorted at the poles.
